\section{Results}
\label{sec:results}

At the end of the project the end-product as intended, did not work, but a lot of results were achieved.

During the project, an antenna was built that had a resonance peak at the right frequency (13.56 MHz) and had a bandwidth that was sufficient to receive the modulated signal.

There was also a nice filter/amplifier stage designed. This stage was simulated and it worked like expected. Because of this stage the received signal became more usable, as it caused less noise and more gain.

The decoding algorithm could not be tested with a received signal, but in simulations it worked well. The simulations already took into account that there might be missing bits, but with the use of the parity bits and the BCC, this was not a problem.   

At 1.5 meter, it was still possible to see the modulated signal on the oscilloscope. This can be seen in \cref{fig:scope}.

\begin{figure}[h]
\centering
\includegraphics[keepaspectratio,width=0.8\textwidth]{assets/scope.jpg}
\caption{Eavesdropped OOK (Reader to Tag) modulation}
\label{fig:scope}
\end{figure}

The emulator was tested with several UIDs and worked like expected. It was possible to gain access to for example buildings and the bike shed at the University of Twente.

The demodulation part of the project did not work in the end, but with a bit more time, this should be possible.

